EP2261336A1 - DNA sequence and recombinant production of group 4 major allergens from cereals - Google Patents

DNA sequence and recombinant production of group 4 major allergens from cereals Download PDF

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Publication number
EP2261336A1
EP2261336A1 EP10009677A EP10009677A EP2261336A1 EP 2261336 A1 EP2261336 A1 EP 2261336A1 EP 10009677 A EP10009677 A EP 10009677A EP 10009677 A EP10009677 A EP 10009677A EP 2261336 A1 EP2261336 A1 EP 2261336A1
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seq
dna
allergens
polypeptide
sequence
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EP2261336B1 (en
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Helmut Prof. Fiebig
Andreas Dr. Nandy
Oliver Dr. Cromwell
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Merck Patent GmbH
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Merck Patent GmbH
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/415—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from plants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P37/00—Drugs for immunological or allergic disorders
    • A61P37/08—Antiallergic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00—Medicinal preparations containing antigens or antibodies
    • A61K2039/51—Medicinal preparations containing antigens or antibodies comprising whole cells, viruses or DNA/RNA
    • A61K2039/53—DNA (RNA) vaccination
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00—Medicinal preparations containing peptides

Definitions

  • the present invention relates to the provision of DNA sequences of group-4 major allergens from cereals ( Triticeae ).
  • the invention also includes fragments, new combinations of partial sequences and point mutants with hypoallergenic activity.
  • the recombinant DNA molecules and the deduced polypeptides, fragments, recombinations of partial sequences and variants can be used for the therapy of pollen allergic diseases.
  • the recombinantly produced proteins can be used for in vitro and in vivo diagnostics of pollen allergies.
  • Allergies of type 1 have worldwide significance. Up to 20% of the population in industrialized countries suffer from conditions such as allergic rhinitis, conjunctivitis or bronchial asthma. These allergies are caused by airborne allergens (aeroallergens) released from sources of various origins such as plant pollen, mites, cats or dogs. Up to 40% of these type 1 allergy sufferers in turn show specific IgE reactivity with grass pollen allergens, including cereal pollen allergens ( Freidhoff et al., 1986, J. Allergy Clin. Immunol. 78, 1190-2001 ). Of particular importance among the pollen allergens are the allergens of rye.
  • the type 1 allergy-causing substances are proteins, glycoproteins or polypeptides. These allergens react after absorption via the mucous membranes with the sensitized persons at the Surface of mast cell-bound IgE molecules. If two IgE molecules are cross-linked by an allergen, this leads to the release of mediators (eg histamine, prostaglandins) and cytokines by the effector cell and thus to the corresponding clinical symptoms.
  • mediators eg histamine, prostaglandins
  • the allergens from the pollen of different species of the grass family are divided into groups that are homologous with each other.
  • the molecules of major allergen group 4 have a high immunological cross-reactivity with both mouse monoclonal antibodies and with human IgE antibodies ( Fahlbusch et al., 1993 Clin. Exp. Allergy 23: 51-60 ; Leduc-Brodard et al., 1996, J. Allergy Clin. Immunol. 98: 1065-1072 ; Su et al., 1996, J. Allergy Clin. Immunol. 97: 210 ; Fahlbusch et al., 1998, Clin. Exp.
  • peptide fragments containing the following sequences were described for the basic group-4 allergen: FLEPVLGLIFPAGV (SEQ ID NO 28) and GLIEFPAGV (SEQ ID NO 29, Jaggi et al., 1989, Int. Arch. Allergy Appl. Immunol. 89: 342-348 ).
  • the object underlying the present invention was therefore to provide DNA sequences of group-4 major allergens from cereals, in particular the allergen Sec c 4 from rye ( Secale cerale ) (SEQ ID NO 1, 3), Hor v 4 from barley ( Hordeum vulgare ) (SEQ ID NO 5) and Tri a 4 from wheat ( Triticum aestivum ) (SEQ ID NO 7, 9) as well as corresponding recombinant DNA molecules, based on which the allergens expressed as protein and a pharmacologically significant utilization as such or in a modified form can be made accessible.
  • the sequence of Phl p 4 (SEQ ID NO 11) was the starting point for the present invention.
  • DNA sequences of the major pollen allergen Sec c 4, Hor v 4 and Tri a 4, according to SEQ ID NO 1, 3, 5, 7, and 9, are now provided for the first time.
  • the present invention therefore relates to DNA molecules selected from the nucleotide sequences according to SEQ ID NO 1, 3, 5, 7, and 9.
  • the invention further relates to the DNA sequences according to the invention homologous sequences or corresponding DNA molecules of group 4 allergens from other Poaceae such as Lolium perenne, Dactylis glomerata, Poa pratensis, Cynodon dactylon and Holcus lanatus, due to the existing sequence homology with hybridize the DNA sequences according to the invention under stringent conditions, or have an immunological cross-reactivity with respect to the allergens according to the invention.
  • Poaceae such as Lolium perenne, Dactylis glomerata, Poa pratensis, Cynodon dactylon and Holcus lanatus
  • the invention also includes fragments, new combinations of partial sequences and point mutants with hypoallergenic activity.
  • the invention therefore furthermore relates to corresponding partial sequences, a combination of partial sequences or exchange, elimination or addition mutants which code for an immunomodulatory, T cell-reactive fragment of a Poaceae group 4 allergen.
  • the present invention therefore also provides a DNA molecule described above or below or a corresponding recombinant expression vector as a pharmaceutical.
  • the corresponding recombinantly produced proteins can be used for therapy as well as for in vitro and in vivo diagnostics of pollen allergies.
  • the cloned nucleic acid is ligated into an expression vector and this construct is expressed in a suitable host organism. After biochemical purification, this recombinant allergen is available for the detection of IgE antibodies in established procedures.
  • the present invention therefore furthermore relates to a recombinant expression vector comprising a DNA molecule described above or below, functionally linked to an expression control sequence and a host organism, transformed with said DNA molecule or said expression vector.
  • Also contemplated by the invention is the use of at least one previously described DNA molecule or at least one expression vector described above for the manufacture of a medicament for immunotherapeutic DNA vaccination of patients with allergies, at their release Group 4 allergens of Poaceae, preferably Triticeae, especially Sec c , Hor v 4, Tri a 4, are involved and / or for the prevention of such allergies.
  • the invention can be used as an essential component in a recombinant allergen- or nucleic acid-containing preparation for specific immunotherapy.
  • the unchanged protein in the primary structure can be part of the preparation.
  • the nucleic acid per se when ligated with a eukaryotic expression vector, creates a preparation which directly adjusts the allergic immune state in a therapeutic sense.
  • the present invention is the polypeptides encoded by one or more of the previously described DNA molecules, preferably in their capacity as a drug.
  • proteins corresponding to an amino acid sequence according to SEQ ID NO 2, 4, 6, 8, or 10.
  • the mature proteins (without signal sequence portion), starting with the amino acid 23 (SEQ ID NO 2, 4 and 6) and with amino acid 22 (SEQ ID NO 8, 10).
  • the invention relates to proteins which contain these amino acid sequences or parts of these sequences,
  • the invention accordingly also relates to a process for producing such polypeptides by cultivating a host organism and recovering the corresponding polypeptide from the culture.
  • Also contemplated by the invention is the use of at least one polypeptide described above for the manufacture of a medicament for the diagnosis and / or treatment of allergies, at their triggering group 4 allergens of Poaceae, preferably Triticeae, in particular Sec c 4, Hor v 4, Tri a 4, are involved as well as in the prevention of such allergies.
  • homologous EST fragments could be found in EST databases of Hordeum vulgare . However, these fragments do not overlap to a complete gene. However, based on the EST sequences found, Hor v 4 specific primers could be generated which were used for amplification of the Hor v 4 gene from genomic DNA.
  • the deduced protein sequence begins within the signal sequence of Hor v 4 and extends to the C-terminal end of the protein (from amino acid 23 of SEQ ID NO 6).
  • the deduced protein sequences begin within the signal sequence of tri a 4 and extend to the C-terminal end of the protein. Two variants Tri a 4.01 (from amino acid 22 of SEQ ID NO 8) and Tri a 4.02 (from amino acid 22 of SEQ ID NO 10) were found.
  • the DNA sequences according to SEQ ID NO 1, 3, 5, 7 and 9 were incorporated into expression vectors (eg pProEx, pSE 380).
  • expression vectors eg pProEx, pSE 380.
  • E. coli optimized codons used for the N-terminal amino acids known from protein sequencing.
  • allergens can be used for the highly specific diagnosis of grass pollen allergies. This diagnosis can be made in vitro by detection of specific antibodies (IgE, IgG1-4, IgA) and reaction with IgE-loaded effector cells (eg basophils from the blood) or in vivo by skin test reactions and provocation on the reaction organ ,
  • the reaction of the allergens according to the invention with T-lymphocytes of grass pollen allergy sufferers can be achieved by the allergen-specific stimulation of the T lymphocytes for proliferation and cytokine synthesis both with T cells in freshly prepared blood lymphocytes and on established nSec c 4, nHor v 4 and nTri a 4, respectively. reactive T-cell lines and clones can be detected.
  • Site-directed mutagenesis has altered the cysteine-encoding triplets to encode other amino acids, preferably serine. Variants were prepared in which single cysteines were exchanged, as well as those in which different combinations of 2 cysteine residues or all cysteines were changed. The expressed proteins of these cysteine point mutants show greatly reduced or absent reactivity with IgE antibodies of allergy sufferers, but react with the T lymphocytes of these patients.
  • the present invention therefore furthermore relates to a DNA molecule described above or below in which one or more or all of the cysteine residues of the corresponding polypeptide have been exchanged for another amino acid by site-directed mutagenesis.
  • hypoallergenic fragments corresponding to polypeptides having T-cell epitopes as well as those of the hypoallergenic point mutants can be detected by their reaction with T-cells of grass pollen allergy sufferers.
  • Such hypoallergenic fragments or point mutants of the cysteines can be used as preparations for the hyposensitization of allergy sufferers since they react with equal effectiveness with the T cells, but due to the diminished or completely absent IgE reactivity lead to lower IgE-mediated side effects.
  • nucleic acids coding for the hypoallergenic allergen variants according to the invention or the unchanged DNA molecules according to the invention are ligated with a human expression vector, these constructs can likewise be used as preparations for immunotherapy (DNA vaccination).
  • the present invention relates to pharmaceutical preparations containing at least one previously described DNA molecule or at least one expression vector described above and optionally other active ingredients and / or adjuvants for immunotherapeutic DNA vaccination of patients with allergies at their release group 4 allergens the Poaceae, preferably Triticeae, especially Sec c 4, Hor v 4, Tri a 4, are involved and / or for the prevention of such allergies.
  • Another group of pharmaceutical preparations according to the invention contains at least one previously described polypeptide instead of the DNA and is suitable for the diagnosis and / or treatment of said allergies.
  • compositions according to the present invention containing as active ingredients a polypeptide according to the invention or an expression vector and / or their respective pharmaceutically usable derivatives, including mixtures thereof in all ratios.
  • the active compounds according to the invention can be brought into a suitable dosage form together with at least one solid, liquid and / or semi-liquid carrier or excipient and optionally in combination with one or more further active ingredients.
  • excipients immunostimulatory DNA or oligonucleotides with CpG motifs are particularly suitable.
  • Suitable carriers are organic or inorganic substances which are suitable for parenteral administration and do not adversely affect the action of the active ingredient according to the invention.
  • parenteral administration in particular solutions, preferably oily or aqueous solutions, furthermore suspensions, emulsions or implants are used.
  • the active ingredient according to the invention can also be lyophilized and the lyophilizates obtained can be used, for example, for the production of injection preparations.
  • the preparations indicated can be sterilized and / or contain adjuvants such as preservatives, stabilizers and / or wetting agents, emulsifiers, salts for influencing the osmotic pressure, buffer substances and / or several further active ingredients.
  • adjuvants such as preservatives, stabilizers and / or wetting agents, emulsifiers, salts for influencing the osmotic pressure, buffer substances and / or several further active ingredients.
  • depot preparations can be obtained by appropriate formulation of the active ingredient according to the invention - for example by adsorption on aluminum hydroxide.
  • the invention thus also serves to improve the in vitro diagnosis in the context of an allergen components-resolving identification of the patient-specific Sensibilmaschinesspektrums.
  • the invention also serves for the production of significantly improved preparations for the specific immunotherapy of grass pollen allergies.

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Abstract

DNA molecules (I), corresponding to the sequence of the major allergens of cereal pollen are new. (I) have sequences (1; 1603 nucleotides (nt)); (3; 1644 nt); (5; 1608 nt); (7; 1603 nt) or (9; 1603 nt), all reproduced. DNA molecules (I), corresponding to the sequence of the major allergens of cereal pollen comprise sequences comprising 1603 nucleotides (SEQ ID No.:1) (nt)); 1644 nucleotides (SEQ ID No.:3; ); 1608 nucleotides (SEQ ID No.:5; ); 1603 nucleotides (SEQ ID No.:7; ) or 1603 nucleotides (SEQ ID No.:9; ). Independent claims are also included for: (1) DNA (Ia) that hybridizes to (I) under stringent conditions and is derived from DNA of Poaceae; (2) DNA (Ib) that encodes a polypeptide that is immunologically cross-reactive with the major allergens Sec c 4 ( Secale cereale); Hor v 4 ( Hordeum vulgare) or Tri a 4 ( Triticum aestivum) and derived from Poaceae; (3) DNA fragment, or combination of fragments, of (I), (Ia) or (Ib) that encodes an immunomodulatory T-cell reactive fragment (X) of Group 4 Poaceae allergens; (4) a DNA corresponding to any of the new DNAs or fragments that encodes an (X) but is modified by targeted mutation of individual codons, deletion or addition; (5) recombinant DNA expression vector or cloning system containing any of the new DNAs linked to expression control sequences; (6) host organism transformed with any of the new DNAs or the vector of (5); (7) preparing a polypeptide (II) encoded by the new DNAs by culturing the organisms of (6); and (8) (II) having any of the sequences, comprising 518 amino acids (SEQ ID No.:2; 520 amino acids (SEQ ID No.:4; ); 518 amino acids (SEQ ID No.:6; ); 518 amino acids (SEQ ID No.:8) or 518 amino acids (SEQ ID No.: 10; ) or their mature forms. ACTIVITY : Antiallergic. No biological data given. MECHANISM OF ACTION : Vaccine.

Description

Hintergrund der ErfindungBackground of the invention

Die vorliegende Erfindung betrifft die Bereitstellung von DNA-Sequenzen von Gruppe-4 Majorallergenen aus Getreiden (Triticeae). Die Erfindung schließt auch Fragmente, Neukombinationen von Teilsequenzen und Punktmutanten mit hypoallergener Wirkung ein. Die rekombinanten DNA-Moleküle und die abgeleiteten Polypeptide, Fragmente, Neukombinationen von Teilsequenzen und Varianten können zur Therapie von pollenallergischen Krankheiten genutzt werden. Die rekombinant hergestellten Proteine können zur In-vitro- und In-vivo-Diagnostik von Pollenallergien eingesetzt werden.The present invention relates to the provision of DNA sequences of group-4 major allergens from cereals ( Triticeae ). The invention also includes fragments, new combinations of partial sequences and point mutants with hypoallergenic activity. The recombinant DNA molecules and the deduced polypeptides, fragments, recombinations of partial sequences and variants can be used for the therapy of pollen allergic diseases. The recombinantly produced proteins can be used for in vitro and in vivo diagnostics of pollen allergies.

Allergien vom Typ 1 haben weltweite Bedeutung. Bis zu 20 % der Bevölkerung in industrialisierten Ländern leiden unter Beschwerden wie allergischer Rhinitis, Konjunktivitis oder Bronchialasthma. Diese Allergien werden durch in der Luft befindliche Allergene (Aeroallergene), die von Quellen unterschiedlicher Herkunft wie Pflanzenpollen, Milben, Katzen oder Hunden freigesetzt werden, hervorgerufen. Bis zu 40 % dieser Typ 1-Allergiker wiederum zeigen spezifische IgE-Reaktivität mit Gräserpollenallergenen, unter anderem Getreidepollenallergenen ( Freidhoff et al., 1986, J. Allergy Clin. Immunol. 78, 1190-2001 ). Eine besondere Bedeutung unter den Getreidepollenallergenen besitzen die Allergene von Roggen.Allergies of type 1 have worldwide significance. Up to 20% of the population in industrialized countries suffer from conditions such as allergic rhinitis, conjunctivitis or bronchial asthma. These allergies are caused by airborne allergens (aeroallergens) released from sources of various origins such as plant pollen, mites, cats or dogs. Up to 40% of these type 1 allergy sufferers in turn show specific IgE reactivity with grass pollen allergens, including cereal pollen allergens ( Freidhoff et al., 1986, J. Allergy Clin. Immunol. 78, 1190-2001 ). Of particular importance among the pollen allergens are the allergens of rye.

Bei den Typ 1-Allergie auslösenden Substanzen handelt es sich um Proteine, Glykoproteine oder Polypeptide. Diese Allergene reagieren nach Aufnahme über die Schleimhäute mit den bei sensibilisierten Personen an der Oberfläche von Mastzellen gebundenen IgE-Molekülen. Werden zwei IgE-Moleküle durch ein Allergen miteinander vernetzt, führt dies zur Ausschüttung von Mediatoren (z. B. Histamin, Prostaglandine) und Zytokinen durch die Effektorzelle und damit zu den entsprechenden klinischen Symptomen.The type 1 allergy-causing substances are proteins, glycoproteins or polypeptides. These allergens react after absorption via the mucous membranes with the sensitized persons at the Surface of mast cell-bound IgE molecules. If two IgE molecules are cross-linked by an allergen, this leads to the release of mediators (eg histamine, prostaglandins) and cytokines by the effector cell and thus to the corresponding clinical symptoms.

In Abhängigkeit von der relativen Häufigkeit mit der die einzelnen Allergenmoleküle mit den IgE-Antikörpern von Allergikern reagieren, wird zwischen Major- und Minorallergenen unterschieden.Depending on the relative frequency with which the individual allergen molecules react with the IgE antibodies of allergy sufferers, a distinction is made between major and minor allergens.

Die Allergene aus den Pollen von verschiedenen Spezies aus der Familie er Gräser (Poaceae) werden in Grupppen eingeteilt, die untereinander homolog sind.
Insbesondere die Moleküle der Majorallergengruppe 4 weisen untereinander eine hohe immunologische Kreuzreaktivität sowohl mit monoklonalen Mausantikörpern als auch mit humanen IgE-Antikörpern auf ( Fahlbusch et al., 1993 Clin. Exp. Allergy 23:51-60 ; Leduc-Brodard et al., 1996, J. Allergy Clin. Immunol. 98:1065-1072 ; Su et al., 1996, J. Allergy Clin. Immunol. 97:210 ; Fahlbusch et al., 1998, Clin. Exp. Allergy 28:799-807 ; Gavrovic- Jankulovic et al., 2000, Invest. Allergol. Clin. Immunol. 10 (6):361-367 ; Stumvoll et al. 2002, Biol. Chem. 383:1383-1396 ; Grote et al., 2002, Biol. Chem. 383:1441-1445 ; Andersson und Lidholm, 2003, Int. Arch. Allergy Immunol. 130:87-107 ; Mari, 2003, Clin. Exp. Allergy, 33 (1):43-51 ).The allergens from the pollen of different species of the grass family ( Poaceae ) are divided into groups that are homologous with each other.
In particular, the molecules of major allergen group 4 have a high immunological cross-reactivity with both mouse monoclonal antibodies and with human IgE antibodies ( Fahlbusch et al., 1993 Clin. Exp. Allergy 23: 51-60 ; Leduc-Brodard et al., 1996, J. Allergy Clin. Immunol. 98: 1065-1072 ; Su et al., 1996, J. Allergy Clin. Immunol. 97: 210 ; Fahlbusch et al., 1998, Clin. Exp. Allergy 28: 799-807 ; Gavrovic- Jankulovic et al., 2000, Invest. Allergol. Clin. Immunol. 10 (6): 361-367 ; Stumvoll et al. 2002, Biol. Chem. 383: 1383-1396 ; Grote et al., 2002, Biol. Chem. 383: 1441-1445 ; Andersson and Lidholm, 2003, Int. Arch. Allergy Immunol. 130: 87-107 ; Mari, 2003, Clin. Exp. Allergy, 33 (1): 43-51 ).

Von keinem der Gruppe-4-Majorallergene ist bisher eine vollständige DNA-Sequenz bekannt.None of the group 4 major allergens has so far been known to have a complete DNA sequence.

Von dem Gruppe-4 Allergen aus Dactylus glomerata sind bisher lediglich Peptide durch enzymatischen Abbau gewonnen und sequenziert worden:

  • DIYNYMEPYVSK (SEQ ID NO 13),
  • VDPTDYFGNEQ (SEQ ID NO 14),
  • ARTAWVDSGAQLGELSY (SEQ ID NO 15)
und GVLFNIQYVNYWFAP (SEQ ID NO 16, Leduc-Brodard et al., 1996, J. Allergy Clin. Immunol. 98: 1065-1072 ).Of the group 4 allergens from Dactylus glomerata , only peptides have been obtained by enzymatic degradation and sequenced:
  • DIYNYMEPYVSK (SEQ ID NO 13),
  • VDPTDYFGNEQ (SEQ ID NO 14),
  • ARTAWVDSGAQLGELSY (SEQ ID NO 15)
and GVLFNIQYVNYWFAP (SEQ ID NO 16, Leduc-Brodard et al., 1996, J. Allergy Clin. Immunol. 98: 1065-1072 ).

Auch vom Gruppe-4 Allergen des subtropischen Bermuda-Grases (Cynodon dactylon) sind durch Proteolyse Peptide erhalten und sequenziert worden:

  • KTVKPLYIITP (SEQ ID NO 17),
  • KQVERDFLTSLTKDIPQLYLKS (SEQ ID NO 18),
  • TVKPLYIITPITAAMI (SEQ ID NO 19),
  • LRKYGTAADNVIDAKVVDAQGRLL (SEQ ID NO 20),
  • KWQTVAPALPDPNM (SEQ ID NO 21),
  • VTWIESVPYIPMGDK (SEQ ID NO 22),
  • GTVRDLLXRTSNIKAFGKY (SEQ ID NO 23),
  • TSNIKAFGKYKSDYVLEPIPKKS (SEQ ID NO 24),
  • YRDLDLGVNQVVG (SEQ ID NO 25),
  • SATPPTHRSGVLFNI (SEQ ID NO 26),
und AAAALPTQVTRDIYAFMTPYVSKNPRQAYVNYRDLD (SEQ ID NO 27, Liaw et al., 2001, Biochem. Biophys. Research Communication 280: 738-743 ).Peptides have also been obtained and sequenced by proteolysis of the Group 4 allergen of subtropical Bermuda grass ( Cynodon dactylon ):
  • KTVKPLYIITP (SEQ ID NO 17),
  • KQVERDFLTSLTKDIPQLYLKS (SEQ ID NO 18),
  • TVKPLYIITPITAAMI (SEQ ID NO 19),
  • LRKYGTAADNVIDAKVVDQGRLL (SEQ ID NO 20),
  • KWQTVAPALPDPNM (SEQ ID NO 21),
  • VTWIESVPYIPMGDK (SEQ ID NO 22),
  • GTVRDLLXRTSNIKAFGKY (SEQ ID NO 23),
  • TSNIKAFGKYKSDYVLEPIPKKS (SEQ ID NO 24),
  • YRDLDLGVNQVVG (SEQ ID NO 25),
  • SATPPTHRSGVLFNI (SEQ ID NO 26),
and AAAALPTQVTRDIYAFMTPYVSKNPRQAYVNYRDLD (SEQ ID NO 27, Liaw et al., 2001, Biochem. Biophys. Research Communication 280: 738-743 ).

Für Lolium perenne wurden für das basische Gruppe-4 Allergen Peptidfragmente mit den folgenden Sequenzen beschrieben: FLEPVLGLIFPAGV (SEQ ID NO 28) und GLIEFPAGV (SEQ ID NO 29, Jaggi et al., 1989, Int. Arch. Allergy Appl. Immunol. 89: 342-348 ).For Lolium perenne , peptide fragments containing the following sequences were described for the basic group-4 allergen: FLEPVLGLIFPAGV (SEQ ID NO 28) and GLIEFPAGV (SEQ ID NO 29, Jaggi et al., 1989, Int. Arch. Allergy Appl. Immunol. 89: 342-348 ).

Als erste Sequenz eines Allergens der Gruppe 4 wurde von den Erfindern der vorliegenden Patentanmeldung die noch unveröffentlichte Sequenz des Phl p 4 aus Phleum pratense aufgeklärt (SEQ ID NO 11) und in der internationalen Anmeldung WO 04/000881 beschrieben.As the first sequence of a group 4 allergen, the inventors of the present patent application disclosed the still unpublished sequence of Phl p 4 from phleum pratense (SEQ ID NO 11) and in the international application WO 04/000881 described.

Über die Sequenzen der Gruppe-4-Majorallergene aus Getreiden (Triceae) ist bisher nichts bekannt.So far, nothing is known about the sequences of the group-4 major allergens from cereals ( Triceae ).

Die der vorliegenden Erfindung zugrunde liegende Aufgabe bestand daher in der Bereitstellung von DNA-Sequenzen von Gruppe-4 Majorallergenen aus Getreiden, insbesondere des Allergens Sec c 4 aus Roggen (Secale cerale) (SEQ ID NO 1, 3), Hor v 4 aus Gerste (Hordeum vulgare) (SEQ ID NO 5) und Tri a 4 aus Weizen (Triticum aestivum) (SEQ ID NO 7, 9) sowie von entsprechenden rekombinanten DNA-Molekülen, auf deren Grundlage die Allergene als Protein exprimiert und einer pharmakologisch bedeutsamen Verwertung als solches oder in veränderter Form zugänglich gemacht werden kann. Die Sequenz des Phl p 4 (SEQ ID NO 11) war Ausgangspunkt für die vorliegende Erfindung.The object underlying the present invention was therefore to provide DNA sequences of group-4 major allergens from cereals, in particular the allergen Sec c 4 from rye ( Secale cerale ) (SEQ ID NO 1, 3), Hor v 4 from barley ( Hordeum vulgare ) (SEQ ID NO 5) and Tri a 4 from wheat ( Triticum aestivum ) (SEQ ID NO 7, 9) as well as corresponding recombinant DNA molecules, based on which the allergens expressed as protein and a pharmacologically significant utilization as such or in a modified form can be made accessible. The sequence of Phl p 4 (SEQ ID NO 11) was the starting point for the present invention.

Verzeichnis der erfindungsgemäßen SequenzenList of sequences according to the invention

Den DNA- und Protein-Sequenzen der reifen Allergene gemäß SEQ ID NO 1-10 geht eine Signalsequenz voraus. Mit den TGA oder TAG Stopcodons in den DNA-Sequenzen endet der kodierende Bereich.

  • DNA-Sequenz des Sec c 4. (a) Isoform Sec c 4.01 (SEQ ID NO 1), (b) Isoform Sec c 4.02 (SEQ ID NO 3).
  • Von den DNA-Sequenzen gemäß SEQ ID NO 1 und 3 abgeleitete Protein-Sequenzen (SEQ ID NO 2, 4).
  • DNA-Sequenz des Hor v 4 (SEQ ID NO 5).
  • Von der DNA-Sequenz gemäß SEQ ID NO 5 abgeleitete Protein-Sequenz (SEQ ID NO 6).
  • DNA-Sequenz des Tri a 4. (a) Isoform Tri a 4.01 (SEQ ID NO 7), (b) Isoform Tri a 4.02 (SEQ ID NO 9).
  • Von den DNA-Sequenzen gemäß SEQ ID NO 7 und 9 abgeleitete Protein-Sequenzen (SEQ ID NO 8, 10).
  • DNA-Sequenz des Phl p 4 (SEQ ID NO 11), gemäß SEQ ID NO 5 aus der WO 04/000881 .
  • Proteinsequenz des Phl p 4 (SEQ ID NO 12), gemäß SEQ ID NO 6 aus der WO 04/000881 .
The DNA and protein sequences of the mature allergens according to SEQ ID NO 1-10 are preceded by a signal sequence. The coding region ends with the TGA or TAG stop codons in the DNA sequences.
  • DNA sequence of Sec c 4. (a) Isoform Sec c 4.01 (SEQ ID NO 1), (b) Isoform Sec c 4.02 (SEQ ID NO 3).
  • Protein sequences derived from the DNA sequences according to SEQ ID NO 1 and 3 (SEQ ID NO 2, 4).
  • DNA sequence of Hor v 4 (SEQ ID NO 5).
  • From the DNA sequence according to SEQ ID NO 5 derived protein sequence (SEQ ID NO 6).
  • DNA sequence of tri a 4. (a) isoform Tri a 4.01 (SEQ ID NO 7), (b) isoform Tri a 4.02 (SEQ ID NO 9).
  • Protein sequences derived from the DNA sequences according to SEQ ID NO 7 and 9 (SEQ ID NO 8, 10).
  • DNA sequence of Phl p 4 (SEQ ID NO 11), according to SEQ ID NO 5 from the WO 04/000881 ,
  • Protein sequence of Phl p 4 (SEQ ID NO 12), according to SEQ ID NO 6 from the WO 04/000881 ,

Beschreibung der ErfindungDescription of the invention

Mit der vorliegenden Erfindung werden nun erstmals DNA-Sequenzen der Getreidepollenhauptallergene Sec c 4, Hor v 4 und Tri a 4, gemäß SEQ ID NO 1, 3, 5, 7, und 9, bereit gestellt.
Gegenstand der vorliegenden Erfindung sind daher DNA-Moleküle ausgewählt aus den Nukleotidsequenzen gemäß SEQ ID NO 1, 3, 5, 7, und 9.With the present invention, DNA sequences of the major pollen allergen Sec c 4, Hor v 4 and Tri a 4, according to SEQ ID NO 1, 3, 5, 7, and 9, are now provided for the first time.
The present invention therefore relates to DNA molecules selected from the nucleotide sequences according to SEQ ID NO 1, 3, 5, 7, and 9.

Die Erfindung betrifft weiterhin zu den erfindungsgemäßen DNA-Sequenzen homologe Sequenzen bzw. entsprechende DNA-Moleküle von Gruppe-4-Allergenen aus anderen Poaceae wie beispielsweise Lolium perenne, Dactylis glomerata, Poa pratensis, Cynodon dactylon und Holcus lanatus, die aufgrund der bestehenden Sequenzhomologie mit den erfindungsgemäßen DNA-Sequenzen unter stringenten Bedingungen hybridisieren, bzw. bezüglich der erfindungsgemäßen Allergene eine immunologische Kreuzraktivität aufweisen.The invention further relates to the DNA sequences according to the invention homologous sequences or corresponding DNA molecules of group 4 allergens from other Poaceae such as Lolium perenne, Dactylis glomerata, Poa pratensis, Cynodon dactylon and Holcus lanatus, due to the existing sequence homology with hybridize the DNA sequences according to the invention under stringent conditions, or have an immunological cross-reactivity with respect to the allergens according to the invention.

Die Erfindung schließt dabei auch Fragmente, Neukombinationen von Teilsequenzen und Punktmutanten mit hypoallergener Wirkung ein.The invention also includes fragments, new combinations of partial sequences and point mutants with hypoallergenic activity.

Gegenstand der Erfindung sind daher weiterhin entsprechende Teilsequenzen, einer Kombination von Teilsequenzen bzw. Austausch-, Eliminierungs- oder Additionsmutanten, welche für ein immunmodulatorisches, T-Zell-reaktives Fragment eines Gruppe-4-Allergens der Poaceae kodieren. Mit der Kenntnis der DNA-Sequenz der natürlich vorkommenden Allergene ist es nun möglich, diese Allergene als rekombinante Proteine herzustellen, die in der Diagnostik und Therapie von allergischen Erkrankungen Verwendung finden können ( Scheiner and Kraft, 1995, Allergy 50: 384-391 ).The invention therefore furthermore relates to corresponding partial sequences, a combination of partial sequences or exchange, elimination or addition mutants which code for an immunomodulatory, T cell-reactive fragment of a Poaceae group 4 allergen. With the knowledge of the DNA sequence of the naturally occurring allergens it is now possible to produce these allergens as recombinant proteins which can be used in the diagnosis and therapy of allergic diseases ( Scheiner and Kraft, 1995, Allergy 50: 384-391 ).

Ein klassischer Ansatz zur wirksamen therapeutischen Behandlung von Allergien stellt die Spezifische Immuntherapie oder Hyposensibilisierung dar ( Fiebig, 1995, Allergo J. 4 (6): 336-339 , Bousquet et al., 1998, J. Allergy Clin. Immunol. 102(4): 558-562 ). Dabei werden dem Patienten natürliche Allergenextrakte in steigenden Dosen subkutan injiziert. Allerdings besteht bei dieser Methode die Gefahr von allergischen Reaktionen oder sogar eines anaphylaktischen Schocks. Um diese Risiken zu minimieren, werden innovative Präparate in Form von Allergoiden eingesetzt. Dabei handelt es sich um chemisch modifizierte Allergenextrakte, die deutlich reduzierte IgE-Reaktivität, jedoch identische T-Zell-Reaktivität im Vergleich zum nicht behandelten Extrakt aufweisen ( Fiebig, 1995, Allergo J. 4 (7): 377-382 ).
Eine noch weitergehende Therapieoptimierung wäre mit rekombinant hergestellten Allergenen möglich. Definierte, ggfs. auf die individuellen Sensibilisierungsmuster der Patienten abgestimmte Cocktails von hochreinen, rekombinant hergestellten Allergenen könnten Extrakte aus natürlichen Allergenquellen ablösen, da diese außer den verschiedenen Allergenen eine größere Zahl von immunogenen, aber nicht allergenen Begleitproteinen enthalten.
Realistische Perspektiven, die zu einer sicheren Hyposensibilisierung mit Expressionsprodukten führen können, bieten gezielt mutierte rekombinante Allergene, bei denen IgE-Epitope spezifisch deletiert werden, ohne die für die Therapie essentiellen T-Zell Epitope zu beeinträchtigen ( Schramm et al., 1999, J. Immunol. 162: 2406-2414 ).A classical approach to the effective therapeutic treatment of allergies is the specific immunotherapy or hyposensitization ( Fiebig, 1995, Allergo J. 4 (6): 336-339 . Bousquet et al., 1998, J. Allergy Clin. Immunol. 102 (4): 558-562 ). The patient is injected subcutaneously with natural allergen extracts in increasing doses. However, this method involves the risk of allergic reactions or even anaphylactic shock. To minimize these risks, innovative preparations in the form of allergoids are used. These are chemically modified allergen extracts which have markedly reduced IgE reactivity but identical T cell reactivity compared to untreated extract ( Fiebig, 1995, Allergo J. 4 (7): 377-382 ).
An even further therapy optimization would be possible with recombinant allergens. Defined cocktails of high-purity, recombinantly produced allergens, if appropriate, tailored to the individual sensitization patterns of the patients, could replace extracts from natural allergen sources, since these contain, in addition to the various allergens, a larger number of immunogenic but non-allergenic accompanying proteins.
Realistic perspectives, which can lead to a safe hyposensitization with expression products, offer targeted mutated recombinant allergens, in which IgE epitopes are specifically deleted, without affecting the essential for the therapy T-cell epitopes ( Schramm et al., 1999, J. Immunol. 162: 2406-2414 ).

Eine weitere Möglichkeit zur therapeutischen Beeinflussung des gestörten TH-Zell-Gleichgewichtes bei Allergikern ist die immuntherapeutische DNA-Vakzinierung. Dabei handelt es sich um eine Behandlung mit expressionsfähiger DNA, die für die relevanten Allergene kodiert. Erste experimentelle Belege für die allergenspezifische Beeinflussung der Immunantwort konnte an Nagern durch Injektion von Allergen-kodierender DNA erbracht werden ( Hsu et al., 1996, Nature Medicine 2 (5): 540-544 ).Another possibility for therapeutically influencing the disturbed TH cell balance in allergy sufferers is the immunotherapeutic DNA vaccination. This is a treatment with expressive DNA coding for the relevant allergens. First experimental evidence for the allergen-specific influence on the immune response could be provided to rodents by injecting allergen-encoding DNA ( Hsu et al., 1996, Nature Medicine 2 (5): 540-544 ).

Gegenstand der vorliegenden Erfindung ist daher auch ein vor- oder nachstehend beschriebenes DNA-Molekül bzw. ein entsprechender rekombinanter Expressionsvektor als Arzneimittel.The present invention therefore also provides a DNA molecule described above or below or a corresponding recombinant expression vector as a pharmaceutical.

Die entsprechenden rekombinant hergestellten Proteine können zur Therapie sowie zur in vitro- und in vivo-Diagnostik von Pollenallergien eingesetzt werden.
Zur Herstellung des rekombinanten Allergens wird die klonierte Nukleinsäure in einen Expressionsvektor ligiert und dieses Konstrukt in einem geeigneten Wirtsorganismus exprimiert. Nach biochemischer Reinigung steht dieses rekombinante Allergen zur Detektion von IgE-Antikörpern in etablierten Verfahren zur Verfügung.The corresponding recombinantly produced proteins can be used for therapy as well as for in vitro and in vivo diagnostics of pollen allergies.
To produce the recombinant allergen, the cloned nucleic acid is ligated into an expression vector and this construct is expressed in a suitable host organism. After biochemical purification, this recombinant allergen is available for the detection of IgE antibodies in established procedures.

Gegenstand der vorliegenden Erfindung ist daher weiterhin ein rekombinanter Expressionsvektor, enthaltend ein vor- oder nachstehend beschriebenes DNA-Molekül, funktionell verbunden mit einer Expressionskontrollsequenz und ein Wirtsorganismus, transformiert mit besagtem DNA-Molekül oder besagtem Expressionsvektor.The present invention therefore furthermore relates to a recombinant expression vector comprising a DNA molecule described above or below, functionally linked to an expression control sequence and a host organism, transformed with said DNA molecule or said expression vector.

Ebenfalls erfindungsgegenständlich ist die Verwendung mindestens eines zuvor beschriebenen DNA-Moleküls oder mindestens eines zuvor beschriebenen Expressionsvektors zur Herstellung eines Arzneimittels zur immuntherapeutischen DNA-Vakzinierung von Patienten mit Allergien, an deren Auslösung Gruppe-4-Allergene der Poaceae, vorzugsweise Triticeae, insbesondere Sec c 4, Hor v 4, Tri a 4, beteiligt sind und/oder zur Prävention solcher Allergien.Also contemplated by the invention is the use of at least one previously described DNA molecule or at least one expression vector described above for the manufacture of a medicament for immunotherapeutic DNA vaccination of patients with allergies, at their release Group 4 allergens of Poaceae, preferably Triticeae, especially Sec c , Hor v 4, Tri a 4, are involved and / or for the prevention of such allergies.

Wie bereits ausgeführt kann die Erfindung als eine essentielle Komponente in einem rekombinanten allergen- oder nukleinsäurehaltigen Präparat zur spezifischen Immuntherapie angewendet werden. Hierbei bieten sich mehrere Möglichkeiten. Zum einen kann das in der Primärstruktur unveränderte Protein Bestandteil des Präparates sein. Zum anderen kann durch gezielte Deletion von IgE-Epitopen des Gesamtmoleküls oder der Herstellung von einzelnen Fragmenten, die für T-Zell Epitope kodieren, erfindungsgemäß eine hypoallergene (allergoide) Form zur Therapie verwendet werden, um unerwünschte Nebenwirkungen zu vermeiden. Schließlich wird durch die Nukleinsäure an sich, wenn sie mit einem eukaryontischen Expressionsvektor ligiert wird, ein Präparat geschaffen, das direkt appliziert den allergischen Immunzustand im therapeutischen Sinne verändert.As already stated, the invention can be used as an essential component in a recombinant allergen- or nucleic acid-containing preparation for specific immunotherapy. Here are several possibilities. On the one hand, the unchanged protein in the primary structure can be part of the preparation. On the other hand can be used according to the invention by targeted deletion of IgE epitopes of the whole molecule or the production of individual fragments that code for T-cell epitopes, a hypoallergenic (allergoid) form of therapy to avoid unwanted side effects. Finally, the nucleic acid per se, when ligated with a eukaryotic expression vector, creates a preparation which directly adjusts the allergic immune state in a therapeutic sense.

Desweiteren handelt es sich bei der vorliegenden Erfindung um die von einem oder mehreren der zuvor beschriebenen DNA-Moleküle kodierten Polypeptide, vorzugsweise in ihrer Eigenschaft als Arzneimittel.
Dabei handelt es sich um Proteine entsprechend einer Aminosäuresequenz gemäß SEQ ID NO 2, 4, 6, 8, oder 10. Insbesondere handelt es sich um die reifen Proteine (ohne Signalsequenzanteil), beginnend mit der Aminosäure 23 (SEQ ID NO 2, 4 und 6) und mit der Aminosäure 22 (SEQ ID NO 8, 10). Weiterhin betrifft die Erfindung Proteine, welche diese Aminosäuresequenzen oder Teile dieser Sequenzen enthalten,Furthermore, the present invention is the polypeptides encoded by one or more of the previously described DNA molecules, preferably in their capacity as a drug.
These are proteins corresponding to an amino acid sequence according to SEQ ID NO 2, 4, 6, 8, or 10. In particular, the mature proteins (without signal sequence portion), starting with the amino acid 23 (SEQ ID NO 2, 4 and 6) and with amino acid 22 (SEQ ID NO 8, 10). Furthermore, the invention relates to proteins which contain these amino acid sequences or parts of these sequences,

Die Erfindung betrifft demgemäß auch ein Verfahren zur Herstellung solcher Polypeptide durch Kultivieren eines Wirtsorganismus und Gewinnung des entsprechenden Polypeptids aus der Kultur.The invention accordingly also relates to a process for producing such polypeptides by cultivating a host organism and recovering the corresponding polypeptide from the culture.

Ebenfalls erfindungsgegenständlich ist die Verwendung mindestens eines zuvor beschriebenen Polypeptides zur Herstellung eines Arzneimittels zur Diagnose und/oder Behandlung von Allergien, an deren Auslösung Gruppe-4-Allergene der Poaceae, vorzugsweise Triticeae, insbesondere Sec c 4, Hor v 4, Tri a 4, beteiligt sind sowie zur Prävention solcher Allergien.Also contemplated by the invention is the use of at least one polypeptide described above for the manufacture of a medicament for the diagnosis and / or treatment of allergies, at their triggering group 4 allergens of Poaceae, preferably Triticeae, in particular Sec c 4, Hor v 4, Tri a 4, are involved as well as in the prevention of such allergies.

Bei der Ermittlung der erfindungsgemäßen Protein- und DNA-Sequenzen wurde wie folgt vorgegangen:In determining the protein and DNA sequences according to the invention, the procedure was as follows:

Sec c 4 aus RoggenSec c 4 from rye

  • 1. Ausgehend von der DNA-Sequenz des Phl p 4 (SEQ ID NO 12, WO 04/000881 ) wurden spezifische Primer (Tab. 1) generiert, die von der Phl p 4 Sequenz abgeleitet wurden. Durch PCR mit den Primern #87 und #83 konnten fünf Klone aus Roggenpollen DNA gewonnen werden. Das diesen Klonen entsprechende, amplifizierte Sec c 4-Genfragment-1 kodiert für ein den Aminosäuren 68-401 des Phl p 4 (SEQ ID NO 12) entsprechendes Polypeptid.1. Starting from the DNA sequence of Phl p 4 (SEQ ID NO 12, WO 04/000881 ) specific primers (Table 1) were generated, which were derived from the Phl p 4 sequence. By PCR with primers # 87 and # 83, five clones were obtained from rye pollen DNA. The amplified Sec c 4 gene fragment-1 corresponding to these clones codes for a polypeptide corresponding to amino acids 68-401 of Phl p 4 (SEQ ID NO 12).
  • 2. Mit der partiellen Sec c 4-Sequenz wurde eine EST-Datenbankrecherche durchgeführt. Es konnten jedoch keine homologen Sequenzen in auf Roggen spezialisierte EST-Datenbanken gefunden werden. Statt dessen wurden einzelne, homologe, nicht überlappende EST-Fragmente in auf Gerste und Weizen spezialisierten EST-Datenbanken gefunden. Einzelne EST-Fragmente reichen in den 5'-UTR, andere in den 3'-UTR Bereich (UTR = nicht-translatierter Bereich) der entsprechenden Gene hinein.2. An EST database search was performed on the partial Sec c 4 sequence. However, no homologous sequences could be found in rye-specialized EST databases. Instead, single, homologous, nonoverlapping EST fragments were found in barley and wheat specialized EST databases. Individual EST fragments extend into the 5 'UTR, others into the 3' UTR region (UTR = untranslated region) of the corresponding genes.
  • 3. Aus den in den Datenbanken gefundenen EST-Sequenzen lässt sich jedoch kein komplettes Gruppe-4-Gen aus Weizen oder Gerste konstruieren, da diese Sequenzen nicht überlappen und kein homologes Gruppe-4-Gen bekannt ist. Anhand der Phl p 4-Sequenz (SEQ ID NO 11) und des in Schritt 1 erhaltenen Sec c 4-Fragmentes konnten diese EST-Sequenzen jedoch zugeordnet werden und dienten als Vorlage für die Herstellung von PCR-Primern.3. However, from the EST sequences found in the databases no complete group 4 gene from wheat or barley can be constructed, as these sequences do not overlap and no homologous group 4 gene is known. However, based on the Phl p 4 sequence (SEQ ID NO 11) and the Sec c 4 fragment obtained in step 1, these EST sequences could be assigned and served as a template for the preparation of PCR primers.
  • 4. Mit Hilfe der so hergestellten Primer #195 und #189 konnten drei Klone durch PCR erhalten werden. Der Primer #195 wurde aus einer Gerste-EST-Sequenz abgeleitet, der Primer #189 ist ein Phl p 4-spezifischer Primer und überlappt das Phl p 4-Stoppcodon sowie die Codons der 10 C-terminalen Phl p 4-Aminosäuren. Das so amplifizierte Sec c 4-Genfragment-2 kodiert für ein Polypeptid, beginnend innerhalb der Signalsequenz und endend mit der Position, die der Position 490 des Phl p 4 entspricht. Dieses Polypeptid deckt den N-Terminus von Sec c 4 ab.4. With the help of primers # 195 and # 189 thus prepared, three clones could be obtained by PCR. Primer # 195 was derived from a barley EST sequence, primer # 189 is a Phl p 4 specific primer and overlaps the Phl p 4 stop codon as well as the codons of the 10 C-terminal Phl p 4 amino acids. The thus amplified Sec c 4 gene fragment-2 encodes a polypeptide beginning within the signal sequence and ending with the position corresponding to position 490 of Phl p 4. This polypeptide covers the N-terminus of Sec c 4.
  • 5a. Drei weitere Klone wurden durch PCR mit den Primern #195 und #202 erhalten. Beide Primer wurden aus Gerste EST-Sequenzen abgeleitet. Das amplifizierte Sec c 4-Gen-3 kodiert für die korrespondierenden Aminosäuren beginnend innerhalb der Signalsequenz und endend am C-Terminus von Sec c 4.
    Die komplette Sequenz des reifen Sec c 4 ist somit in der bestimmten Sequenz enthalten.    5a. Three additional clones were obtained by PCR with primers # 195 and # 202. Both primers were derived from barley EST sequences. The amplified Sec c 4 gene 3 encodes the corresponding amino acids starting within the signal sequence and ending at the C terminus of Sec c 4.
    The complete sequence of the mature Sec c 4 is thus contained in the particular sequence.

Die beiden nächsten Schritte 5b und 5c dienen der Absicherung des im Schritt 5a erhaltenen Ergebnisses:

  • 5b. Ein weiterer Klon wurde durch PCR mit den Primern #195 und #203 erhalten. Primer #195 wurde von einer Gerste EST-Sequenz abgeleitet, Primer #203 von einer Weizen EST Sequenz. Das amplifizierte Sec c 4 Gen kodiert für die korrespondierenden Aminosäuren beginnend innerhalb der Signalsequenz und endend am C-Terminus von Sec c 4. Die komplette Sequenz des reifen Sec c 4 ist daher in der bestimmten Sequenz enthalten.
  • 5c. Ein weiterer Klon wurde durch PCR mit den Primern #195 und #198 erhalten. Auch Primer #198 Das amplifizierte Sec c 4 Gen kodiert für die korrespondierenden Aminosäuren beginnend innerhalb der Signalsequenz und endend am C-Terminus von Sec c 4. Die komplette Sequenz des reifen Sec c 4 ist daher in der bestimmten Sequenz enthalten.
  • Es wurden zwei Isoformen Sec c 4.01 und 4.02 aufgefunden. Die reifen Allergene beginnen mit der Aminosäure 23 der Sequenzen gemäß SEQ ID NO 2, 4, und 6.
The next two steps 5b and 5c serve to secure the result obtained in step 5a:
  • 5b. Another clone was obtained by PCR with primers # 195 and # 203. Primer # 195 was derived from a barley EST sequence, primer # 203 from a wheat EST sequence. The amplified Sec c 4 gene encodes the corresponding amino acids starting within the signal sequence and ending at the C-terminus of Sec c 4. The complete sequence of the mature Sec c 4 is therefore contained in the particular sequence.
  • 5c. Another clone was obtained by PCR with primers # 195 and # 198. Also primer # 198 The amplified Sec c 4 gene encodes the corresponding amino acids beginning within the signal sequence and ending at the C-terminus of Sec c 4. The complete sequence of the mature Sec c 4 is therefore included in the particular sequence.
  • Two isoforms Sec c 4.01 and 4.02 were found. The mature allergens start with the amino acid 23 of the sequences according to SEQ ID NO 2, 4, and 6.

Hor v 4 aus GersteHor v 4 made of barley

Mit Hilfe der wie zuvor beschrieben erhaltenen Sec c 4-Sequenzen konnten in EST-Datenbanken von Hordeum vulgare homologe EST-Fragmente gefunden wurde. Diese Fragmente überlappen jedoch nicht zu einem kompletten Gen. Anhand der gefundenen EST-Sequenzen konnten jedoch Hor v 4-spezifische Primer generiert werden, die für eine Amplifikation des Hor v 4-Gens aus genomischer DNA verwendet wurden.Using the Sec c 4 sequences obtained as described above, homologous EST fragments could be found in EST databases of Hordeum vulgare . However, these fragments do not overlap to a complete gene. However, based on the EST sequences found, Hor v 4 specific primers could be generated which were used for amplification of the Hor v 4 gene from genomic DNA.

Insgesamt wurden 15 Klone analysiert.

  • 4 Klone wurden durch PCR mit den Primern #195 und #198 erhalten.
  • 4 Klone wurden durch PCR mit den Primern #195 und #202 erhalten.
  • 3 Klone wurden durch PCR mit den Primern #194 und #198 erhalten.
  • 4 Klone wurden durch PCR mit den Primern #194 und #202 erhalten.
A total of 15 clones were analyzed.
  • 4 clones were obtained by PCR with primers # 195 and # 198.
  • 4 clones were obtained by PCR with primers # 195 and # 202.
  • 3 clones were obtained by PCR with primers # 194 and # 198.
  • 4 clones were obtained by PCR with primers # 194 and # 202.

Die abgeleitete Proteinsequenz beginnt innerhalb der Signalsequenz von Hor v 4 und reicht bis zum C-terminalen Ende des Proteins (ab Aminosäure 23 von SEQ ID NO 6).The deduced protein sequence begins within the signal sequence of Hor v 4 and extends to the C-terminal end of the protein (from amino acid 23 of SEQ ID NO 6).

Tri a 4 aus WeizenTri a 4 of wheat

Mit Hilfe der wie zuvor beschrieben erhaltenen Sec c 4-Sequenz konnten in EST-Datenbanken von Triticum aestivum homologe EST-Fragmente gefunden wurde. Diese Fragmente überlappen jedoch nicht zu einem kompletten Gen. Anhand der gefundenen EST-Sequenzen konnten jedoch die Tri a 4-spezifische Primer #199, #203, #204 und #206 generiert werden, die für eine Amplifikation des Tri a 4 Gens aus genomischer DNA verwendet wurden.Using the Sec c 4 sequence obtained as described above, it was possible to find EST fragments homologous in EST databases of Triticum aestivum . However, these fragments do not overlap to a complete gene. However, based on the found EST sequences, the Tri a 4 specific primers # 199, # 203, # 204 and # 206 were generated which were used for amplification of the genomic DNA tri a 4 gene.

Insgesamt wurden 13 Klone analysiert.

  • 4 Klone wurden durch PCR mit den Primern #204 und #203 erhalten.
  • 4 Klone wurden durch PCR mit den Primern #204 und #199 erhalten.
  • 3 Klone wurden durch PCR mit den Primern #206 und #203 erhalten.
  • 4 Klone wurden durch PCR mit den Primern #206 und #199 erhalten.
A total of 13 clones were analyzed.
  • 4 clones were obtained by PCR with primers # 204 and # 203.
  • 4 clones were obtained by PCR with primers # 204 and # 199.
  • 3 clones were obtained by PCR with primers # 206 and # 203.
  • 4 clones were obtained by PCR with primers # 206 and # 199.

Die abgeleiteten Proteinsequenzen beginnen innerhalb der Signalsequenz von Tri a 4 und reichen bis zum C-terminalen Ende des Proteins.
Es wurden zwei Varianten Tri a 4.01 (ab Aminosäure 22 von SEQ ID NO 8) und Tri a 4.02 (ab Aminosäure 22 von SEQ ID NO 10) aufgefunden.The deduced protein sequences begin within the signal sequence of tri a 4 and extend to the C-terminal end of the protein.
Two variants Tri a 4.01 (from amino acid 22 of SEQ ID NO 8) and Tri a 4.02 (from amino acid 22 of SEQ ID NO 10) were found.

Zur Herstellung der rekombinanten erfindungsgemäßen Allergene wurden die DNA-Sequenzen gemäß SEQ ID NO 1, 3, 5, 7 und 9 in Expressionsvektoren (z.B. pProEx, pSE 380) eingebaut. Für die aus der Proteinsequenzierung bekannten N-terminalen Aminosäuren wurden E. coli optimierte Codons verwendet.To prepare the recombinant allergens according to the invention, the DNA sequences according to SEQ ID NO 1, 3, 5, 7 and 9 were incorporated into expression vectors (eg pProEx, pSE 380). For the N-terminal amino acids known from protein sequencing, E. coli optimized codons used.

Nach der Transformation in E. coli, der Expression und der Reinigung des rekombinanten erfindungsgemäßen Allergene durch verschiedene Trenntechniken wurde die erhaltenen Proteine einem Refoldingprozess unterworfen.
Beide Allergene können zur hochspezifischen Diagnostik von Graspollenallergien eingesetzt werden. Diese Diagnostik kann in vitro durch die Detektion von spezifischen Antikörpern (IgE, IgG1 - 4, IgA) und die Reaktion mit IgE-beladenen Effektorzellen (z. B. Basophile aus dem Blut) oder in vivo durch Hauttest-Reaktionen und Provokation am Reaktionsorgan erfolgen.After the transformation into E. coli, expression and purification of the recombinant allergen of the invention by various separation techniques, the resulting proteins were subjected to a refolding process.
Both allergens can be used for the highly specific diagnosis of grass pollen allergies. This diagnosis can be made in vitro by detection of specific antibodies (IgE, IgG1-4, IgA) and reaction with IgE-loaded effector cells (eg basophils from the blood) or in vivo by skin test reactions and provocation on the reaction organ ,

Die Reaktion der erfindungsgemäßen Allergene mit T-Lymphozyten von Graspollenallergikern können durch die allergenspezifische Stimulierung der T-Lymphozyten zur Proliferation und Zytokinsynthese sowohl mit T-Zellen in frisch präparierten Blutlymphozyten als auch an etablierten nSec c 4, nHor v 4 bzw. nTri a 4-reaktiven T-Zell-Linien und -Klonen nachgewiesen werden.The reaction of the allergens according to the invention with T-lymphocytes of grass pollen allergy sufferers can be achieved by the allergen-specific stimulation of the T lymphocytes for proliferation and cytokine synthesis both with T cells in freshly prepared blood lymphocytes and on established nSec c 4, nHor v 4 and nTri a 4, respectively. reactive T-cell lines and clones can be detected.

Durch ortsgerichte Mutagenese wurden die für die Cysteine kodierenden Tripletts so verändert, dass sie für andere Aminosäuren, bevorzugt Serin, kodieren. Es wurden sowohl Varianten hergestellt, bei denen einzelne Cysteine ausgetauscht wurden, als auch solche, bei denen verschiedene Kombinationen von 2 Cysteinresten bzw. alle Cysteine verändert wurden. Die exprimierten Proteine dieser Cysteinpunktmutanten weisen eine stark reduzierte bzw. fehlende Reaktivität mit IgE-Antikörpern von Allergikern auf, reagieren jedoch mit den T-Lymphozythen dieser Patienten.Site-directed mutagenesis has altered the cysteine-encoding triplets to encode other amino acids, preferably serine. Variants were prepared in which single cysteines were exchanged, as well as those in which different combinations of 2 cysteine residues or all cysteines were changed. The expressed proteins of these cysteine point mutants show greatly reduced or absent reactivity with IgE antibodies of allergy sufferers, but react with the T lymphocytes of these patients.

Gegenstand der vorliegenden Erfindung ist daher weiterhin ein vor- oder nachstehend beschriebenes DNA-Molekül, bei dem durch ortsgerichtete Mutagenese einer, mehrere oder alle der Cystein-Reste des entsprechenden Polypeptids gegen eine andere Aminosäure ausgetauscht wurden.The present invention therefore furthermore relates to a DNA molecule described above or below in which one or more or all of the cysteine residues of the corresponding polypeptide have been exchanged for another amino acid by site-directed mutagenesis.

Die immunmodulatorische Aktivität von hypoallergenen Fragmenten, die Polypeptiden mit T-Zell-Epitopen entsprechen, sowie die der hypoallergenen Punktmutanten (z.B. Cystein-Austausche) kann durch ihre Reaktion mit T-Zellen von Graspollenallergikern nachgewiesen werden.The immunomodulatory activity of hypoallergenic fragments corresponding to polypeptides having T-cell epitopes as well as those of the hypoallergenic point mutants (e.g., cysteine substitutions) can be detected by their reaction with T-cells of grass pollen allergy sufferers.

Solche hypoallergenen Fragmente bzw. Punktmutanten der Cysteine können als Präparate zur Hyposensibilisierung von Allergikern eingesetzt werden, da sie mit gleicher Effektivität mit den T-Zellen reagieren, jedoch aufgrund der verminderten oder ganz fehlenden IgE-Reaktivität zu geringeren IgE-vermittelten Nebenwirkungen führen.Such hypoallergenic fragments or point mutants of the cysteines can be used as preparations for the hyposensitization of allergy sufferers since they react with equal effectiveness with the T cells, but due to the diminished or completely absent IgE reactivity lead to lower IgE-mediated side effects.

Werden die für die erfindungsgemäßen hypoallergenen Allergen-Varianten kodierenden Nukleinsäuren oder die unveränderten erfindungsgemäßen DNA-Moleküle mit einem humanen Expressionsvektor ligiert, können diese Konstrukte ebenfalls als Präparate für eine Immuntherapie (DNA-Vakzinierung) angewendet werden.If the nucleic acids coding for the hypoallergenic allergen variants according to the invention or the unchanged DNA molecules according to the invention are ligated with a human expression vector, these constructs can likewise be used as preparations for immunotherapy (DNA vaccination).

Schließlich sind Gegenstand der vorliegenden Erfindung pharmazeutische Zubereitungen, enthaltend mindestens ein zuvor beschriebenes DNA-Molekül oder mindestens einen zuvor beschriebenen Expressionsvektor und gegebenenfalls weitere Wirk- und/oder Hilfsstoffe zur immuntherapeutischen DNA-Vakzinierung von Patienten mit Allergien, an deren Auslösung Gruppe-4-Allergene der Poaceae, vorzugsweise Triticeae, insbesondere Sec c 4, Hor v 4, Tri a 4, beteiligt sind und/oder zur Prävention solcher Allergien.Finally, the present invention relates to pharmaceutical preparations containing at least one previously described DNA molecule or at least one expression vector described above and optionally other active ingredients and / or adjuvants for immunotherapeutic DNA vaccination of patients with allergies at their release group 4 allergens the Poaceae, preferably Triticeae, especially Sec c 4, Hor v 4, Tri a 4, are involved and / or for the prevention of such allergies.

Eine weitere Gruppe von erfindungsgemäßen pharmazeutischen Zubereitungen enthält anstelle der DNA mindestens ein zuvor beschriebenes Polypeptid und eignet sich zur Diagnose und/oder Behandlung besagter Allergien.Another group of pharmaceutical preparations according to the invention contains at least one previously described polypeptide instead of the DNA and is suitable for the diagnosis and / or treatment of said allergies.

Pharmazeutische Zubereitungen im Sinne der vorliegenden Erfindung enthaltend als Wirkstoffe ein erfindungsgemäßes Polypeptid oder einen Expressionsvektor und/oder deren jeweilige pharmazeutisch verwendbaren Derivate, einschließlich deren Mischungen in allen Verhältnissen. Hierbei können die erfindungsgemäßen Wirkstoffe zusammen mit mindestens einem festen, flüssigen und/oder halbflüssigen Träger- oder Hilfsstoff und gegebenenfalls in Kombination mit einem oder mehreren weiteren Wirkstoffen in eine geeignete Dosierungsform gebracht werden.
Als Hilfsstoffe sind immunstimulierende DNA oder Oligonukleotide mit CpG-Motiven besonders geeignet.Pharmaceutical preparations according to the present invention containing as active ingredients a polypeptide according to the invention or an expression vector and / or their respective pharmaceutically usable derivatives, including mixtures thereof in all ratios. In this case, the active compounds according to the invention can be brought into a suitable dosage form together with at least one solid, liquid and / or semi-liquid carrier or excipient and optionally in combination with one or more further active ingredients.
As excipients immunostimulatory DNA or oligonucleotides with CpG motifs are particularly suitable.

Diese Zubereitungen können als Therapeutika oder Diagnostika in der Human- oder Veterinärmedizin verwendet werden. Als Trägerstoffe kommen organische oder anorganische Substanzen in Frage, die sich für die parenterale Applikation eignen und die Wirkung des erfindungsgemäßen Wirkstoffs nicht negativ beeinflussen. Zur parenteralen Anwendung dienen insbesondere Lösungen, vorzugsweise ölige oder wässrige Lösungen, ferner Suspensionen, Emulsionen oder Implantate. Der erfindungsgemäße Wirkstoff kann auch lyophilisiert und die erhaltenen Lyophilisate z.B. zur Herstellung von Injektionspräparaten verwendet werden. Die angegebenen Zubereitungen können sterilisiert sein und/oder Hilfsstoffe wie Konservierungs-, Stabilisierungs- und/oder Netzmittel, Emulgatoren, Salze zur Beeinflussung des osmotischen Druckes, Puffersubstanzen und/oder mehrere weitere Wirkstoffe enthalten.
Weiterhin können durch entsprechende Formulierung des erfindungsgemäßen Wirkstoffs Depotpräparate - zum Beispiel durch Adsorption an Aluminiumhydroxid - erhalten werden.These preparations can be used as therapeutics or diagnostics in human or veterinary medicine. Suitable carriers are organic or inorganic substances which are suitable for parenteral administration and do not adversely affect the action of the active ingredient according to the invention. For parenteral administration, in particular solutions, preferably oily or aqueous solutions, furthermore suspensions, emulsions or implants are used. The active ingredient according to the invention can also be lyophilized and the lyophilizates obtained can be used, for example, for the production of injection preparations. The preparations indicated can be sterilized and / or contain adjuvants such as preservatives, stabilizers and / or wetting agents, emulsifiers, salts for influencing the osmotic pressure, buffer substances and / or several further active ingredients.
Furthermore, depot preparations can be obtained by appropriate formulation of the active ingredient according to the invention - for example by adsorption on aluminum hydroxide.

Die Erfindung dient somit auch zur Verbesserung der in vitro Diagnostik im Rahmen einer Allergen-Komponenten auflösenden Identifizierung des patientenspezifischen Sensibilisierungsspektrums. Die Erfindung dient ebenfalls zur Herstellung von deutlich verbesserten Präparaten zur spezifischen Immuntherapie von Gräserpollenallergien.The invention thus also serves to improve the in vitro diagnosis in the context of an allergen components-resolving identification of the patient-specific Sensibilisierungsspektrums. The invention also serves for the production of significantly improved preparations for the specific immunotherapy of grass pollen allergies.

Tabelle 1 Verwendete PrimerTable 1 Primers used

a) Sec c 4 Primer nummer SEQ ID NO Sequenz #0083 30 GGCTCCCGGGGCGAACCAGTAG #0087 31 ACCAACGCCTCCCACATCCAGTC #0189 32

Figure imgb0001
#0195 33 GCTCTCGATCGGCTACAATGGCG #0198 34 CACGCACTACAAATCTCCATGCAAG #0202 35 CATGCTTGATCCTTATTCTACTAGTTGGGC #0203 36 TACGCACGATCCTTATTCTACTAGTTGGGC a) Hor v 4 Primer nummer SEQ ID NO Sequenz #0194 37 GCCTTGTCCTGCCACCACGCCGCCGCCACC #0195 38 GCTCTCGATCGGCTACAATGGCG #0198 39 CACGCACTACAAATCTCCATGCAAG #0202 40 CATGCTTGATCCTTATTCTACTAGTTGGGC c) Tri a 4 Primer nummer SEQ ID NO Sequenz #0199 41 CACGCACTAAATCTCCATGCAAG #0203 42 TACGCACGATCCTTATTCTACTAGTTGGGC #0204 43 AAGCTCTATCGCCTACAATGGCG #0206 44 GGTGCTCCTCTTCTGCGCCTTGTCC
Figure imgb0002
Figure imgb0003
Figure imgb0004
Figure imgb0005
Figure imgb0006
Figure imgb0007
Figure imgb0008
Figure imgb0009
Figure imgb0010
Figure imgb0011
Figure imgb0012
Figure imgb0013
Figure imgb0014
Figure imgb0015
Figure imgb0016
Figure imgb0017
Figure imgb0018
Figure imgb0019
Figure imgb0020
Figure imgb0021
Figure imgb0022
Figure imgb0023
Figure imgb0024
Figure imgb0025
Figure imgb0026
Figure imgb0027
Figure imgb0028
Figure imgb0029
Figure imgb0030
Figure imgb0031
Figure imgb0032
Figure imgb0033
Figure imgb0034
Figure imgb0035
Figure imgb0036
Figure imgb0037
Figure imgb0038
Figure imgb0039
Figure imgb0040
Figure imgb0041
Figure imgb0042
a) Sec c 4 Primer number SEQ ID NO sequence # 0083 30 GGCTCCCGGGGCGAACCAGTAG # 0087 31 ACCAACGCCTCCCACATCCAGTC # 0189 32
Figure imgb0001
 # 0195 33 GCTCTCGATCGGCTACAATGGCG # 0198 34 CACGCACTACAAATCTCCATGCAAG # 0202 35 CATGCTTGATCCTTATTCTACTAGTTGGGC # 0203 36 TACGCACGATCCTTATTCTACTAGTTGGGC a) Hor v 4 Primer number SEQ ID NO sequence # 0194 37 GCCTTGTCCTGCCACCACGCCGCCGCCACC # 0195 38 GCTCTCGATCGGCTACAATGGCG # 0198 39 CACGCACTACAAATCTCCATGCAAG # 0202 40 CATGCTTGATCCTTATTCTACTAGTTGGGC c) Tri a 4 Primer number SEQ ID NO sequence # 0199 41 CACGCACTAAATCTCCATGCAAG # 0203 42 TACGCACGATCCTTATTCTACTAGTTGGGC # 0204 43 AAGCTCTATCGCCTACAATGGCG # 0206 44 GGTGCTCCTCTTCTGCGCCTTGTCC
Figure imgb0002
Figure imgb0003
Figure imgb0004
Figure imgb0005
Figure imgb0006
Figure imgb0007
Figure imgb0008
Figure imgb0009
Figure imgb0010
Figure imgb0011
Figure imgb0012
Figure imgb0013
Figure imgb0014
Figure imgb0015
Figure imgb0016
Figure imgb0017
Figure imgb0018
Figure imgb0019
Figure imgb0020
Figure imgb0021
Figure imgb0022
Figure imgb0023
Figure imgb0024
Figure imgb0025
Figure imgb0026
Figure imgb0027
Figure imgb0028
Figure imgb0029
Figure imgb0030
Figure imgb0031
Figure imgb0032
Figure imgb0033
Figure imgb0034
Figure imgb0035
Figure imgb0036
Figure imgb0037
Figure imgb0038
Figure imgb0039
Figure imgb0040
Figure imgb0041
Figure imgb0042

Claims (13)

Ein DNA-Molekül umfassend die Nukleotidsequenz eines Getreidepollenhauptallergens gemäß SEQ ID NO 5.A DNA molecule comprising the nucleotide sequence of a major grain pollen allergen according to SEQ ID NO 5. Ein rekombinanter DNA-Expressionsvektor oder ein Klonierungssystem, enthaltend ein DNA-Molekül gemäß Anspruch 1, funktionell verbunden mit einer Expressionskontrollsequenz.A recombinant DNA expression vector or a cloning system comprising a DNA molecule according to claim 1, operably linked to an expression control sequence. Ein Wirtsorganismus, transformiert mit einem DNA-Molekül gemäß Anspruch 1 oder einem Expressionsvektor gemäß Anspruch 2.A host organism transformed with a DNA molecule according to claim 1 or an expression vector according to claim 2. Ein Verfahren zur Herstellung eines Polypeptids, kodiert durch eine DNA-Sequenz gemäß Anspruch 1, durch Kultivieren eines Wirtsorganismus gemäß Anspruch 3 und Gewinnung des entsprechenden Polypeptids aus der Kultur.A method of producing a polypeptide encoded by a DNA sequence according to claim 1 by cultivating a host organism according to claim 3 and recovering the corresponding polypeptide from the culture. Ein Polypeptid umfassend die Aminosäuresequenz gemäß SEQ ID NO 6, welches von einer DNA-Sequenz gemäß Anspruch 1 kodiert wird.A polypeptide comprising the amino acid sequence according to SEQ ID NO 6, which is encoded by a DNA sequence according to claim 1. Ein Polypeptid umfassend das reife Allergen der Aminosäuresequenz gemäß SEQ ID NO 6.A polypeptide comprising the mature allergen of the amino acid sequence according to SEQ ID NO 6. Ein Polypeptid gemäß Anspruch 5 oder 6 als Arzneimittel.A polypeptide according to claim 5 or 6 as a medicament. Eine pharmazeutische Zubereitung, enthaltend mindestens ein Polypeptid gemäß Anspruch 7 zur Diagnose und/oder Behandlung von Allergien, an deren Auslösung Gruppe-4-Allergene der Poaceae beteiligt sind.A pharmaceutical preparation containing at least one polypeptide according to claim 7 for the diagnosis and / or treatment of allergies, in whose release Group 4 allergens of the Poaceae are involved. Verwendung mindestens eines Polypeptids gemäß Anspruch 7 zur Herstellung eines Arzneimittels zur Diagnose und/oder Behandlung von Allergien, an deren Auslösung Gruppe-4-Allergene der Poaceae beteiligt sind und/oder zur Prävention solcher Allergien.Use of at least one polypeptide according to claim 7 for the manufacture of a medicament for the diagnosis and / or treatment of allergies, in the initiation of which are involved Group 4 allergens of the Poaceae and / or for the prevention of such allergies. Ein DNA-Molekül gemäß Anspruch 1 als Arzneimittel.A DNA molecule according to claim 1 as a medicament. Ein rekombinanter Expressionsvektor gemäß Anspruch 2 als Arzneimittel.A recombinant expression vector according to claim 2 as a medicament. Eine pharmazeutische Zubereitung, enthaltend mindestens ein DNA-Molekül gemäß Anspruch 10 oder mindestens einen Expressionsvektor gemäß Anspruch 11 zur immuntherapeutischen DNA-Vakzinierung von Patienten mit Allergien, an deren Auslösung Gruppe-4-Allergene der Poaceae beteiligt sind und/oder zur Prävention solcher Allergien.A pharmaceutical preparation containing at least one DNA molecule according to claim 10 or at least one expression vector according to claim 11 for the immunotherapeutic DNA vaccination of patients with allergies, in whose initiation Group 4 allergens of the Poaceae are involved and / or for the prevention of such allergies. Verwendung mindestens eines DNA-Moleküls gemäß Anspruch 10 oder mindestens eines Expressionsvektors gemäß Anspruch 11 zur Herstellung eines Arzneimittels zur immuntherapeutischen DNA-Vakzinierung von Patienten mit Allergien, an deren Auslösung Gruppe-4-Allergene der Poaceae beteiligt sind und/oder zur Prävention solcher Allergien.Use of at least one DNA molecule according to claim 10 or at least one expression vector according to claim 11 for the manufacture of a medicament for immunotherapeutic DNA vaccination of patients with allergies, in whose initiation Group 4 allergens of the Poaceae are involved and / or for the prevention of such allergies.
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